Throttle-operating device



Sept; 18,1923. llfl' E.. N. CUMMINGS THROTTLE OPERATING DEVICE Filed June 26, 1922 1 -an Improvement in Throttle-OperatingDe- Y atented Sept., 18, i923..V

EDWARD' n. centaines, Vor Aranssnnv,

naar erica MASSACHUSETTS.

A THROTTLE-OPERATENG DEVICE.'

Application inea rene 26,1922. .seran no. masse.

To all fui/'iom- L may concer/a.'

Be, it known that 1,; EDWARD and Stateof Massachusetts, Vhave invented vices, of which the following description7 in connection with theaccompanying drawe ings, is a specification, like characters on the drawings representing like parts.V

This invent-ion relates to throttle oper"` ating devices designed particularly forruse on' motor vehicles and the object is tc'iprovide a device for operation by the foot which will permit the throttle to be held in desi ed position of adjustment. with'a steady, uniform pressure invspite of any jouncing of the vehicle in the courseof operation and without muscular tension or fatigue.

My invention will be best understood by rreference Vto the l following description.

. `throttle of the engine.

the illustrative embodiment thereof shown inthe accompanying drawing wherein have shown an arrangement adapte for application to an automobile accelerator' pedal of known type and wherein:

Fig. l is a plan view of the device;

Fig. 2^is a side elevation thereof; and

Fig is an end elevation of a portion thereof. Y

Referring to the drawings I have therein shown a portion of the footwell of an automobile, through the footboard 5 of which projects the depressible pedalA or button 7 of well known type adapted to operate the It is a matter of considerable difficulty in devices of this kind to maintain thethrottle in a desired position of adjustment as the jouncing of the vehicle over the road causes the pedal 7 to be unduly depressed or released and even when this is obviated it is at the expense of muscular tension which Vgives riseto considerable fatigue. In accordance with my invention I provideV means for operating the throttle and in particular in the ein ample shown a mechanism which be utilized for operating on the conventional pedal 7 and which will permit the foot to Vrest with a steady pressure and wherein lthe adjustment of the throttle will not be effected byV the jouncing of the vehicle ou the road.

In the embodiment of the invention shown the actuating- N.' Groen` Y afines, a citizen of the United States, and. a resident of Amesbury, county of Essex,

Aof the foot may rest on the motion ef the foot is applied to the' pedal 7 by means of a lever 9 pivoted at 11 inadvance ofthe pedal 7 and nor-V mally elevated as .by means of the spring 13 to a limiti of movement provided by the stop 15 on the lever which makes contact with the pivotal'mounting therefor. -Herein Vthis pivotalmounting is shown as provided by ears ona suitable plate 17 adapted to be secured by screwsto the' footb-oard of the vehicle. Y j.

The primary operating means for the throttle is organized insuch a manner that a steady pressure of the foot may be maintained thereon with-out operating movement and herein l have shown a plate 19 secured to the fioorand having ears 21 in which is journalled a wheel 23, the arrangement being such in the example shown that the sole g periphery of the wheel while the heel the surface which carries the plate 19. t will readily be understood from an inspection of Fig. 2 that whatever the rotative position of adjustment of the wheel the foot Vwill always find a bearing in dead center alignment with the pivot of the wheel and thus the downward pressure on the foot does not `tend to rotate the wheel 23. lf, however, the foot is pressed forward longitudinally the wheel will rotate and a suitable eccentric connection thereof with the throttle operating mechanism may provide for opening and closing the throttle. As already stated in the example shown, movement of the pedal 7 is eected by means of a pivoted lever 9 and herein the wheel 523 embodies a pinion 25, preferably formed as a central portion thereof between the elevated roughened treads 27, and the end of the lever 9 is formed as a sector gear 29 meshing with this pinion. The action of the spring 13 on the lever 9 will normally bring the parts to the position shown in F ig. 2 and it will be readily understood that if the foot is slid forward on theheel, rotating the wheel 23 in a clockwise direction, the lever 9 will be swung in a counterclock wise direction, depressing the pedal 7. The throttle having been opened in this manner, the weight of the foot may rest rmly against the wheel 23 without the introduction of any new forces tending to rotate the same but on Vthe contrary serving to hold is supported on -cause him to release the pedal 7 it in its position of adjustment. The operator thus i'inds a iirm support for his toot and any jouncing of the vehicle does not or to increase the pressure-thereon.

It will be understood that the arrangement oi pinion and sector gear is but one downward pressure but adapted to move .un-

der lengthwise shifting of the toot in such manner as to transmit motion to operate a depressible pedal 7 or similar mechanism for controlling the throttle of the engine.

Having described in detail the particular example of my invention shown in the accompanying drawings, the novel features exemplified thereby which l wish to secure by Letters Patent l shall define in the following claims.V

Claims:

1. ln combination with a depressible throttle operating device, a lever overlying the saine, a sector gear on the lever, a pin ion meshing therewith and presenting a tread whereby it may be rotated by the foot.

ln combination with a reciprocable throttle operating device a wheel mounted toreceive the tore part of an operators ioot with the heel on the surface which supports the wheel7 a pivoted lever overlying said device and means connecting the free end of the lever with the wheel eccenmember to be actuated thereby.

trically thereof to receive motion therefrom v as the'wheel is rotated. f

attachment. for .workingthe same adapted to be superposed on said footboard and com# prisinga: tread to receive the sole ofV theV foot substantiallyrimmovable under down.- ward pressure thereof'but adapted to move under lengthwise shifting ot the foot and associated motion transmitting Vmeans to ei feet depression' of said device Vensuch move'- ment. Y Y

fl. .An attachment'for application to the ootboard of existing motor vehicles to overlie the depressible throttlefoperating dcvice projecting therethrough and embodying securing portions ior superposition on said footboard, a rotary member journalled to lie above said b-oard andv presentingV a tread on which the foot mayrrest and a cooperating mechanism for depressing said'de vice eccentrically connected to saidl rotary 5. ,An attachmentfor applicationrto the 'fo-otboard ot a motor vehicle comprising a base to rest on the top thereof, a r tary member journalled therein to lie'above the Y the board and presenting a tread on which foot may rest and connecting means eccentrically related thereto to depress a throttleoperating device which projects through said ootboard.

"in testimony whereof,l I have signed my Vname to this specification.v

EDl/VARD N. CUMMINGS. 

